/* *{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
} */
html,body{
    height: 100%;
}
html{
    font-size: 16px;
}
ul,li{
    list-style: none;
}
a,u,del,s{
    text-decoration: none;
}
h1,h2,h3,h4,h5,h6{
    font-size: 16px;
}
b,strong{
    font-weight: normal;
}
i,em{
    font-style: normal;
}
img{
    display: block;
}
.clear::after{
    content: "";
    display: block;
    width: 0;
    height: 0;
    overflow: hidden;
    clear: both;
}
.core{
    width: 1200px;
    height: 100%;
    /* background: yellow; */
    margin: 0 auto;
}